/*
 * Copyright 2003 The Apache Software Foundation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cn.taketoday.context.cglib.transform;

import cn.taketoday.context.asm.AnnotationVisitor;
import cn.taketoday.context.asm.Attribute;
import cn.taketoday.context.asm.ClassVisitor;
import cn.taketoday.context.asm.FieldVisitor;
import cn.taketoday.context.asm.MethodVisitor;
import cn.taketoday.context.asm.TypePath;

public class ClassVisitorTee extends ClassVisitor {

  private ClassVisitor cv1, cv2;

  public ClassVisitorTee(ClassVisitor cv1, ClassVisitor cv2) {
//		super(Constant.ASM_API);
    this.cv1 = cv1;
    this.cv2 = cv2;
  }

  public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
    cv1.visit(version, access, name, signature, superName, interfaces);
    cv2.visit(version, access, name, signature, superName, interfaces);
  }

  public void visitEnd() {
    cv1.visitEnd();
    cv2.visitEnd();
    cv1 = cv2 = null;
  }

  public void visitInnerClass(String name, String outerName, String innerName, int access) {
    cv1.visitInnerClass(name, outerName, innerName, access);
    cv2.visitInnerClass(name, outerName, innerName, access);
  }

  public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
    FieldVisitor fv1 = cv1.visitField(access, name, desc, signature, value);
    FieldVisitor fv2 = cv2.visitField(access, name, desc, signature, value);
    if (fv1 == null) return fv2;
    if (fv2 == null) return fv1;
    return new FieldVisitorTee(fv1, fv2);
  }

  public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
    MethodVisitor mv1 = cv1.visitMethod(access, name, desc, signature, exceptions);
    MethodVisitor mv2 = cv2.visitMethod(access, name, desc, signature, exceptions);
    if (mv1 == null) return mv2;
    if (mv2 == null) return mv1;
    return new MethodVisitorTee(mv1, mv2);
  }

  public void visitSource(String source, String debug) {
    cv1.visitSource(source, debug);
    cv2.visitSource(source, debug);
  }

  public void visitOuterClass(String owner, String name, String desc) {
    cv1.visitOuterClass(owner, name, desc);
    cv2.visitOuterClass(owner, name, desc);
  }

  public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
    return AnnotationVisitorTee.getInstance(cv1.visitAnnotation(desc, visible), cv2.visitAnnotation(desc, visible));
  }

  public void visitAttribute(Attribute attrs) {
    cv1.visitAttribute(attrs);
    cv2.visitAttribute(attrs);
  }

  public AnnotationVisitor visitTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible) {
    return AnnotationVisitorTee.getInstance(cv1.visitTypeAnnotation(typeRef, typePath, desc, visible),
                                            cv2.visitTypeAnnotation(typeRef, typePath, desc, visible));
  }
}
